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A 10m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N person sits at 2m from the left end of the beam, what is the tension in the right rope?
A 870 MHz base station antenna array has vertical dimension of 2.5 m and horizontal dimensions of 0.4 m. What is the maximum possible gain?
A 6200 kg satellite is in a circular earth orbit that has a radius of 3.3 x 107 m. What work W must be the net external force do
One hockey puck of mass 0.2 kg strikes an identical stationary puck on a frictionless ice rink. what fraction of the energy was lost
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a stream-powered catapult. the thrust of its engine is 2.3 x 10^5 N . in being launched from rest it moves through a distance of 87 m and has kinetic energy of 4.5..
A 2m3 balloon filled with helium at sea level climbs to 10,000 m. The temperature at sea-level is 20C, What is the volume of the balloon at 10,000 m
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
If the top row of Pascal's triangle (which contains the single number ‘1') is denoted row zero, what is the sum of all the numbers in the triangle above row N?
The power (in watts) used to move air out of the lungs is equal to the air pressure (in N/m2) multiplied by the air flow rate (in m3/s)
A coin placed on a turntable rotating at 37.9 rev/min will stay there if its center is placed no further than 8.5 cm from the axis of rotation. find the coefficient of friction between the coin and turntable
Predict the frequency for a DNA molecule after the sulphur substition.
question your cars fan belt turns a pulley at 3.00 revs . when you step on the gas for 1.25s the rate increases
You go to the playground and slide down the slide, a 3.0 meter long ramp at an angle of 36 degrees with respect to horizontal. How long does it take you to reach the bottom of the slide
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